Cattle biting louse

Bovicola bovis is a species of louse in the suborder Ischnocera, family Trichodectidae. Often referred to as the cattle biting louse, this ectoparasite does not feed on blood but grazes on the skin scales, dander, and secretions from the sebaceous glands of its host, causing significant irritation to cattle.

This pest is exclusively found on cattle and is most problematic during the winter months. In the cold season, cattle are kept in confined quarters with higher stock density, which facilitates the rapid spread of lice from one animal to another. Lack of sunlight and lower temperatures contribute to the population growth of these insects.

The life cycle of Bovicola bovis occurs entirely on the host animal and lasts approximately 30 to 40 days. The female attaches her eggs, known as nits, to the hair shafts near the skin. The nymphs hatch and undergo three molting stages before becoming adults. Since the entire cycle depends on the host's body, the population can explode quickly.

The primary damage caused by these lice is persistent itching, which leads to intense scratching and rubbing. This results in hair loss, skin lesions, and damaged hides. In severe cases, the constant irritation causes decreased weight gain, reduced milk production, and a weakened immune system, making the cattle more susceptible to other secondary infections.

Control strategies involve the administration of approved insecticides, such as pour-on formulations, sprays, or dusts. It is crucial to treat all animals in the herd simultaneously to prevent re-infestation. Good sanitation practices, regular grooming, and maintaining optimal housing conditions are essential components of an integrated pest management program for cattle.